Test or not?

Hi ladies,

My partner and I have been trying to conceive for a little while now, but so far without success...

Normally, I get my period on the 10th day and it lasts for 5 days.

This time, I got my period a day earlier, and it only lasted 2 days...

Also, over the last few weeks, I've been feeling a bit nauseous from time to time, or I feel like something is sitting on my stomach...

I don't want to jump to conclusions too quickly, but should I take a test??

All tips and info are definitely welcome! ;-)

Love!